لاَ تَقُولُواْ رَاعِنَا Cautious conduct before the Messenger.

[Mazhar]

http//www.haqeeqat.org.pk/English%20Tafsir%20e%20Haqeeqat/00.Arabic%20Text/temp%2002%20%202.104a.gif
O those/you who consciously proclaim to have accepted/become believers, listen

http//www.haqeeqat.org.pk/English%20Tafsir%20e%20Haqeeqat/00.Arabic%20Text/temp%2002%20%202.104b.gif
"You people should not address by saying "Raa'ina"; and instead say "U'nzurna-you kindly pay us attention". And you people attentively listen to him .

http//www.haqeeqat.org.pk/English%20Tafsir%20e%20Haqeeqat/00.Arabic%20Text/2.104p.gif
And a grievous punishment is in wait/prepared for those who are the deliberate/persistent deniers/non believing.

The first direct address and first direction to those who proclaim to have believed is for adopting the most respectful and cautious attitude while they are in the presence of the Messenger to an extent that they should not employ a word which could be articulated in such a manner that some audience could perceive a sound conveying meanings of little or derogatory import.

The first and foremost requirement/obligation of a person becoming a believer is to acknowledge and be cautious of the most dignified stature and position of the Messenger Muhammad and to conduct most respectfully with regard to him otherwise the belief and all good acts could go waste and be of no consequence.

The reason of prohibiting the use of otherwise a valid word of Arabic language is manifested in 446 where it is told that the Jews said this word in this manner

http//www.haqeeqat.org.pk/English%20Tafsir%20e%20Haqeeqat/00.Arabic%20Text/004.%20An%20Nisa/temp%2014%20%204.46h.gif
"and they say http//www.haqeeqat.org.pk/English%20Tafsir%20e%20Haqeeqat/00.Tabweeb%20Part%202/001.%20Roots%20originating%20in%20Surat%20002/2.104/1.gif in the manner of twisting with their tongues".

A complete account of the language is with reference to the way sounds are produced, i.e. articulation and the way they are perceived, i.e. its auditory properties. The precise shape and volume of the oral cavity, i.e. region of the vocal tract between the larynx and the opening of the mouth, distinguishes vowels from each other for auditory purpose and the main organ involved in adjusting the shape and volume is the tongue. If the body of the tongue is pushed forward and turned towards the roof of the mouth we get the stressed sound of vowel http//www.haqeeqat.org.pk/English%20Tafsir%20e%20Haqeeqat/000.%20ARABIC%20made%20easy%20by%20Quraan/zer.gif. This is exactly what those Jews did while uttering this word.

Word by Word Analysis 2104